package com.it985.springcloud.service.impl;

import cn.hutool.core.util.IdUtil;
import com.it985.springcloud.service.PaymentService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * TODO:
 *
 * @Author yushu
 * @Date 2022/3/30 14:40
 */
@Service
public class PaymentServiceImpl implements PaymentService {

    /**
     * 正常访问
     *
     * @param id
     * @return
     */
    @Override
    public String paymentInfo_OK(Integer id) {
        return "线程池： " + Thread.currentThread().getName() + "  paymentInfo_OK, id: " + id + "\t  ^_^";
    }

    @Override
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandle", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_TimeOut(Integer id) {
        int timeNumber = 3;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池： " + Thread.currentThread().getName() + "  paymentInfo_TimeOut, id: " + id + "\t  ^_^   耗时" + timeNumber + "秒钟";
    }

    public String paymentInfo_TimeOutHandle(Integer id) {
        return "线程池： " + Thread.currentThread().getName() + "  paymentInfo_TimeOutHandle, id: " + id + "\t  0.0";
    }

    /**
     * 服务熔断
     * @param id
     * @return
     */
    @Override
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),
            // 请求次数
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),
            // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),
            // 失败率达到多少后跳闸
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号: " + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " + id;
    }
}
